What to buy: We like the La Tourangelle brand of roasted nut oils like this walnut oil. Avoid brands that use refined nut oils—they don’t taste like the nuts they came from. Store nut oils in the refrigerator or freezer to prevent rancidity.

Game plan: If you’re making the dressing ahead of time, add the minced chives just before serving.

Ingredients

1/4 cup plus 1 tablespoon roasted walnut oil

3 tablespoons grapeseed or canola oil

3 tablespoons finely chopped fresh chives

3 tablespoonswhite wine vinegar

1 1/2 teaspoonsDijon mustard

Kosher salt

Freshly ground black pepper

Instructions

1Place walnut and grapeseed or canola oils in a small bowl or measuring cup.

2Place chives, vinegar, and mustard in a medium, nonreactive bowl and whisk to combine. Slowly drizzle in the oil mixture, whisking continuously, until all of the oil is incorporated. Season with salt and pepper to taste and serve.